I am attempting to use qt gui widgets in a C++ flowgraph. I managed
to get all of the build dependencies figured out, which was no easy
task in itself and required a lot of direct includes. Anyway, the
error that I am getting now deals directly with the make function.
The line that is giving me trouble is as follows
qtgui_sink_c_sptr qtsink = qtgui_make_sink_c
(fftsize, gr_firdes::WIN_HAMMING, 0, 1.0, "Spectrum Display",
true, true, true, true, QWidget *parent=NULL);
Information on this function is available here.
The error that I am getting is that parent is undefined. I really
don’t know what to put for this. Note that I have also tried putting
just NULL or just 0 and it throws an undefined reference error (for
the function call). I was wondering if someone could give me some
pointers on what to use for parent? While I would eventually like to
have both an fft and a time domain view in a single window, I am
currently just trying to get the fft to show in its own window.
Thanks ahead of time!